6a-Methyl-17a-acetoxyprogesterone

Chemical Name 17-Acetoxy-6a-methyl-pregn-4-ene-3,20-dione Common Name 6a-Methyl-17a-acetoxyprogesterone Structural Formula ... 

The use of an intramuscular progestogen preparation Depo-Provera (150 mg of medroxyprogesterone acetate or 6a-methyl-17a-acetoxyprogesterone) every 3 months does not lead to an increase in the level of plasma vitamin A levels (B14). For example, the plasma... 

The time for canonicalizing the steroid 6a-methyl-17a -acetoxyprogesterone is 5063 times the time for executing a store instruction on the same computer, the IBM 370/165. (The actual time is 1.61 + 0.02 microseconds. I deliberately place this number in parentheses, since all such comparisons should be relative to the computer.) A search of the literature did not reveal other such reported times, so there is no reason to conclude that the sum algorithm discussed below is less or more rapid than any other canonicalization algorithms used elsewhere. Hopefully this paper presents some starting points for considering the question of efficiency and how to improve it. 

XXVI 12a-Chloro-ll/S-hydroxyprogesterone XXVII 21 -Fluoro-lla-acetoxyprogesterone XXVIII 6a-Methyl-17a-ethynyltestosterone XXIX 6a-Methyl -21 -ethyl -17a -ethynyl testosterone... 

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